Cisco TelePresence Administrator's Manual page 197

Dial plan and call processing
1. Go to the DNS page (System > DNS).
2. Enter in the Address 1 to Address 5 fields the IP addresses of up to 5 DNS servers that the VCS will
query when attempting to locate a domain. These fields must use an IP address, not a FQDN.
Cisco VCS Administrator Guide (X7.1) Page 197 of 479